Sexual ambiguity is much more tolerated. Like you said crossdressers are fairly well accepted, and there are many famous crossdressers and very effeminate stars who appear on variety shows.

I would say gays are in general, at least tolerated. There are gay clubs and bars, etc.

What about marriage? Is it allowed over there? Or is it the same as over here in the U.S.?

Good question. I have never heard of a gay marriage in Japan...people tend to keep quiet about homosexuality, so it wouldn't surprise me if gay couples didn't have the desire to out themselves with something like a marriage.

I could have sworn I saw somewhere in the media two Asian homosexual actresses were wed.

But, I don't remember what part of Asia they were from or where they were hitched at. I think they were B-rate celebrities though. :\

I would doubt they were from Japan.

Japanese famous people have an incredible relationship with the media. Scandals are exposed, (especially affairs) but famous people's private lives are mostly kept private.